Effects of Citrus unshiu powder on the cytokine balance in peripheral blood mononuclear cells of patients with seasonal allergic rhinitis to pollen |
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Authors: | Tanabe Soichi Kinuta Yuki Yasumatsu Hatsumi Takayanagi Masayoshi Kobayashi Shoko Takido Naondo Sugiyama Masanori |
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Institution: | Graduate School of Biosphere Science, Hiroshima University, Japan. stanabe@hiroshima-u.ac.jp |
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Abstract: | We evaluated the effects of a 50% methanol extract of Citrus unshiu powder (MEC) on cytokines in peripheral blood mononuclear cells (PBMCs) obtained from patients with seasonal allergic rhinitis to cedar pollen. The levels of cytokines, such as TNF-alpha, IFN-gamma, IL-2, IL-4, IL-5, IL-10, IL-12 (p70), IL-13, and GM-CSF, produced by pollen-stimulated PBMC were measured. We found that MEC suppressed pollen-induced TNF-alpha release and increased IFN-gamma release from PBMCs. The results suggest that Citrus unshiu powder has an immunomodulatory effect in vitro and that its use could improve seasonal allergic rhinitis symptoms. |
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